Screen.width

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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概述

返回屏幕的宽度。

语法

lWidth = window.screen.width

示例

js
// crude way to check that the screen is at 1024x768
if (window.screen.width > 1000) {
  // resolution is below 10 x 7
}

备注

注意,该属性返回的宽度值不一定就是浏览器窗口可使用的宽度。当有其他小工具占据了屏幕空间时,浏览器有时不能占用小工具(如任务栏)占据的空间。window.screen.widthwindow.screen.availWidth 两者不同。相关属性 window.screen.height

在返回该值时,IE 会考虑缩放设置。只有在缩放比例为 100% 时,IE 才返回真实的屏幕宽度。

规范

Specification
CSSOM View Module
# dom-screen-width

浏览器兼容性